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<P><STRONG>
<P><STRONG><A id=p11 name=p11></A></STRONG></P>
<P>dance links 中文版</P><A id=p11 name=p11></A></STRONG>
<P></P>
<P><STRONG><A 
href="http://sqybi.com/works/dlxcn/">http://sqybi.com/works/dlxcn/</A></STRONG></P>
<P><STRONG></STRONG></P>
<P><STRONG></STRONG></P>
<P><STRONG>精确覆盖问题</STRONG></P>
<P>给定一个由0和1组成的矩阵，是否能找到一个行的集合，使得集合中每一列都恰好包含一个1？例如，下面这个矩阵</P>
<TABLE width="100%" border=0>
  <TBODY>
  <TR>
    <TD>
      <DIV>
      <DIV>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
      <IMG height=118 alt="" 
      src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/1.png" 
      width=191></DIV></DIV></TD>
    <TD width=50>
      <DIV><IMG height=118 alt="" 
      src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/1.png" 
  width=191></DIV></TD></TR></TBODY></TABLE>
<P>就包含了这样一个集合（第1，4，5行）。我们把列想象成全集的一些元素，而行看作全集的一些子集；或者我们可以把行想象成全集的一些元素，而把列看作全集的一些子集；那么这个问题就是要求寻找一批元素，它们与每个子集恰好有一个交点。不管怎么说，这都是一个很难的问题，众所周知，当每行恰包含3个1时，这是个一个NP-完全问题。自然，作为首选的算法就是回溯了。</P>
<P><STRONG><A id=p12 
name=p12></A>解决精确覆盖问题。</STRONG>对于接下来的非确定性算法，由于我们没有想到更好的名字，我们将称之为X算法，它能够找到由特定的01矩阵A定义的精确覆盖问题的所有解。X算法是实现试验——错误这一显而易见的方法的一段简单的语句（确实，一般来说，我想不到别的合理的方法来完成这个工作）。</P>
<BLOCKQUOTE>
  <P><SPAN style="COLOR: #ff0000">如</SPAN><SPAN 
  style="COLOR: #ff0000">果A是空的，问题解决；成功终止。<BR>否则，选择一个列c（确定的）。<BR>选择一个行r，满足 A[r, 
  c]=1 （不确定的）。<BR>把r包含进部分解。<BR>对于所有满足 A[r,j]=1 的j，<BR>　　从矩阵A中删除第j列；<BR>　　对于所有满足 
  A[i,j]=1 的i，<BR>　　　　从矩阵A中删除第i行。<BR>在不断减少的矩阵A上递归地重复上述算法。</SPAN></P></BLOCKQUOTE>
<P>对r不确定的选择意味着这个算法本质上把自身复制给许多独立的子算法；每个子算法继承了当前的矩阵A，但在考虑不同行r的同时对其进行了删减。如果列c全部是0，那么就不存在子算法而且这个过程会不成功地终止。很自然地，所有的子算法搭建了一棵搜索树，其根部就是初始问题，并且第k层的每个子算法对应k个选择的行。回溯就是前序遍历这棵树的过程，即“深度优先”。</P>
<P>hust acm Exact cover使用dance links求解</P>
<P><IMG id=Codehighlighter1_0_367_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_0_367_Open_Text.style.display='none'; Codehighlighter1_0_367_Closed_Image.style.display='inline'; Codehighlighter1_0_367_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_0_367_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_0_367_Closed_Text.style.display='none'; Codehighlighter1_0_367_Open_Image.style.display='inline'; Codehighlighter1_0_367_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top><SPAN id=Codehighlighter1_0_367_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff">/**/</SPAN><SPAN 
id=Codehighlighter1_0_367_Open_Text><SPAN style="COLOR: #008000">/*</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>从昨天下午就开始搞，今天中午才搞定，Dancing&nbsp;Links&nbsp;果然高深<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>神奇的双向环形十字链表······转的头晕了-_-||不过蛮有成就感的^v^<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>记录一下解题过程，先反反复复看了一遍Donald&nbsp;E.Knuth的论文，就开始攻hust&nbsp;1017这道题目，<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>题目意思很明确：<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>给定一个由0和1组成的矩阵，是否能找到一个行的集合，使得集合中每一列都恰好包含一个1。<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>论文中有详细解答，具体思路就是：<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>1.&nbsp;任意选择一列c，然后删除它(这个删除并不是普通的把这一列删除，而是要将这一列中有1的格子所在的行全部删除)<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>2.&nbsp;然后对这一列上有1的每一行进行枚举，当枚举到第i行时<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;该行上所有有1的列j全部删除(同上删除法)<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>3.&nbsp;然后递归进入下一次，直到所有的列均被删除则有解<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>4.&nbsp;恢复对j的删除<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>5.&nbsp;恢复对c的删除<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top></SPAN><SPAN style="COLOR: #008000">*/</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" 
align=top>#include&nbsp;</SPAN><SPAN style="COLOR: #000000">&lt;</SPAN><SPAN 
style="COLOR: #000000">iostream</SPAN><SPAN 
style="COLOR: #000000">&gt;</SPAN><SPAN style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">using</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">namespace</SPAN><SPAN 
style="COLOR: #000000">&nbsp;std;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
id=Codehighlighter1_426_481_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_426_481_Open_Text.style.display='none'; Codehighlighter1_426_481_Closed_Image.style.display='inline'; Codehighlighter1_426_481_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_426_481_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_426_481_Closed_Text.style.display='none'; Codehighlighter1_426_481_Open_Image.style.display='inline'; Codehighlighter1_426_481_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN 
style="COLOR: #000000">&nbsp;point&nbsp;</SPAN><SPAN 
id=Codehighlighter1_426_481_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_426_481_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;L;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;R;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;U;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;D;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;Sum;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;x,&nbsp;y;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN><SPAN style="COLOR: #000000">p[&nbsp;</SPAN><SPAN 
style="COLOR: #000000">1010</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">1010</SPAN><SPAN style="COLOR: #000000">&nbsp;];<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" 
align=top><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;n,&nbsp;m;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i,&nbsp;j,&nbsp;k;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;map[</SPAN><SPAN 
style="COLOR: #000000">1001</SPAN><SPAN style="COLOR: #000000">][</SPAN><SPAN 
style="COLOR: #000000">1001</SPAN><SPAN style="COLOR: #000000">];<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;sor[</SPAN><SPAN 
style="COLOR: #000000">1001</SPAN><SPAN style="COLOR: #000000">];<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;flag;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;stack[</SPAN><SPAN 
style="COLOR: #000000">1001</SPAN><SPAN 
style="COLOR: #000000">],&nbsp;top;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
id=Codehighlighter1_615_639_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_615_639_Open_Text.style.display='none'; Codehighlighter1_615_639_Closed_Image.style.display='inline'; Codehighlighter1_615_639_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_615_639_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_615_639_Closed_Text.style.display='none'; Codehighlighter1_615_639_Open_Image.style.display='inline'; Codehighlighter1_615_639_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;Num(</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;x,&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;y)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_615_639_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_615_639_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN 
style="COLOR: #000000">&nbsp;x&nbsp;</SPAN><SPAN 
style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">1001</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">+</SPAN><SPAN 
style="COLOR: #000000">&nbsp;y;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">删除c列</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG id=Codehighlighter1_671_941_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_671_941_Open_Text.style.display='none'; Codehighlighter1_671_941_Closed_Image.style.display='inline'; Codehighlighter1_671_941_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_671_941_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_671_941_Closed_Text.style.display='none'; Codehighlighter1_671_941_Open_Image.style.display='inline'; Codehighlighter1_671_941_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN 
style="COLOR: #000000">&nbsp;CoverCol(</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_671_941_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_671_941_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i,&nbsp;j;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[&nbsp;c&nbsp;].R&nbsp;].L&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[&nbsp;c&nbsp;].L;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[&nbsp;c&nbsp;].L&nbsp;].R&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[&nbsp;c&nbsp;].R;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">删除c列中每个有1的行</SPAN><SPAN style="COLOR: #008000"><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
id=Codehighlighter1_803_939_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_803_939_Open_Text.style.display='none'; Codehighlighter1_803_939_Closed_Image.style.display='inline'; Codehighlighter1_803_939_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_803_939_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_803_939_Closed_Text.style.display='none'; Codehighlighter1_803_939_Open_Image.style.display='inline'; Codehighlighter1_803_939_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].D;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].D)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_803_939_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_803_939_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[i].y&nbsp;].Sum&nbsp;</SPAN><SPAN 
style="COLOR: #000000">--</SPAN><SPAN style="COLOR: #000000">;<BR><IMG 
id=Codehighlighter1_874_936_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_874_936_Open_Text.style.display='none'; Codehighlighter1_874_936_Closed_Image.style.display='inline'; Codehighlighter1_874_936_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_874_936_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_874_936_Closed_Text.style.display='none'; Codehighlighter1_874_936_Open_Image.style.display='inline'; Codehighlighter1_874_936_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(j&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].R;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].R)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_874_936_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_874_936_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[j].D&nbsp;].U&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[&nbsp;j&nbsp;].U;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[j].U&nbsp;].D&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[&nbsp;j&nbsp;].D;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top></SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">恢复c列</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG id=Codehighlighter1_972_1214_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_972_1214_Open_Text.style.display='none'; Codehighlighter1_972_1214_Closed_Image.style.display='inline'; Codehighlighter1_972_1214_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_972_1214_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_972_1214_Closed_Text.style.display='none'; Codehighlighter1_972_1214_Open_Image.style.display='inline'; Codehighlighter1_972_1214_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN 
style="COLOR: #000000">&nbsp;Release(</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_972_1214_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_972_1214_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i,&nbsp;j;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[&nbsp;c&nbsp;].R&nbsp;].L&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[&nbsp;c&nbsp;].L&nbsp;].R&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">恢复c列中每个有1的行</SPAN><SPAN style="COLOR: #008000"><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
id=Codehighlighter1_1090_1212_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1090_1212_Open_Text.style.display='none'; Codehighlighter1_1090_1212_Closed_Image.style.display='inline'; Codehighlighter1_1090_1212_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1090_1212_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1090_1212_Closed_Text.style.display='none'; Codehighlighter1_1090_1212_Open_Image.style.display='inline'; Codehighlighter1_1090_1212_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].U;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].U)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1090_1212_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1090_1212_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[i].y&nbsp;].Sum&nbsp;</SPAN><SPAN 
style="COLOR: #000000">++</SPAN><SPAN style="COLOR: #000000">;<BR><IMG 
id=Codehighlighter1_1161_1209_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1161_1209_Open_Text.style.display='none'; Codehighlighter1_1161_1209_Closed_Image.style.display='inline'; Codehighlighter1_1161_1209_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1161_1209_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1161_1209_Closed_Text.style.display='none'; Codehighlighter1_1161_1209_Open_Image.style.display='inline'; Codehighlighter1_1161_1209_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(j&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].L;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].L)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1161_1209_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1161_1209_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[j].D&nbsp;].U&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;j;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;p[j].U&nbsp;].D&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;j;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
id=Codehighlighter1_1232_2009_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1232_2009_Open_Text.style.display='none'; Codehighlighter1_1232_2009_Closed_Image.style.display='inline'; Codehighlighter1_1232_2009_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1232_2009_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1232_2009_Closed_Text.style.display='none'; Codehighlighter1_1232_2009_Open_Image.style.display='inline'; Codehighlighter1_1232_2009_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;dfs(</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;k)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1232_2009_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1232_2009_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i,&nbsp;j,&nbsp;l,&nbsp;m;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">if</SPAN><SPAN 
style="COLOR: #000000">(flag)&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN 
style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">得解输出</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG id=Codehighlighter1_1300_1415_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1300_1415_Open_Text.style.display='none'; Codehighlighter1_1300_1415_Closed_Image.style.display='inline'; Codehighlighter1_1300_1415_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1300_1415_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1300_1415_Closed_Text.style.display='none'; Codehighlighter1_1300_1415_Open_Image.style.display='inline'; Codehighlighter1_1300_1415_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">if</SPAN><SPAN 
style="COLOR: #000000">(p[&nbsp;</SPAN><SPAN 
style="COLOR: #000000">0</SPAN><SPAN 
style="COLOR: #000000">&nbsp;].R&nbsp;</SPAN><SPAN 
style="COLOR: #000000">==</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1300_1415_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1300_1415_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">%d</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">,&nbsp;top);<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN 
style="COLOR: #000000">;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">&lt;</SPAN><SPAN 
style="COLOR: #000000">&nbsp;top;&nbsp;i</SPAN><SPAN 
style="COLOR: #000000">++</SPAN><SPAN style="COLOR: #000000">)<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">&nbsp;%d</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN 
style="COLOR: #000000">,&nbsp;stack[i]);<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;puts(</SPAN><SPAN 
style="COLOR: #000000">""</SPAN><SPAN style="COLOR: #000000">);<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;flag&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN 
style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">0</SPAN><SPAN 
style="COLOR: #000000">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">每次取出没有被覆盖的并且1的个数最小的一列</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;Min&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;INT_MAX;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top><BR><IMG id=Codehighlighter1_1522_1595_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1522_1595_Open_Text.style.display='none'; Codehighlighter1_1522_1595_Closed_Image.style.display='inline'; Codehighlighter1_1522_1595_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1522_1595_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1522_1595_Closed_Text.style.display='none'; Codehighlighter1_1522_1595_Open_Image.style.display='inline'; Codehighlighter1_1522_1595_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].R;&nbsp;i&nbsp;;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].R)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1522_1595_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1522_1595_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
id=Codehighlighter1_1552_1592_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1552_1592_Open_Text.style.display='none'; Codehighlighter1_1552_1592_Closed_Image.style.display='inline'; Codehighlighter1_1552_1592_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1552_1592_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1552_1592_Closed_Text.style.display='none'; Codehighlighter1_1552_1592_Open_Image.style.display='inline'; Codehighlighter1_1552_1592_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">if</SPAN><SPAN 
style="COLOR: #000000">(p[&nbsp;p[i].y&nbsp;].Sum&nbsp;</SPAN><SPAN 
style="COLOR: #000000">&lt;</SPAN><SPAN 
style="COLOR: #000000">&nbsp;Min)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1552_1592_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1552_1592_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Min&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[&nbsp;p[i].y&nbsp;].Sum;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">将这一列删除</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;CoverCol(c);<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;c;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">枚举c列中的每一行</SPAN><SPAN style="COLOR: #008000"><BR><IMG 
id=Codehighlighter1_1681_1976_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1681_1976_Open_Text.style.display='none'; Codehighlighter1_1681_1976_Closed_Image.style.display='inline'; Codehighlighter1_1681_1976_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1681_1976_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1681_1976_Closed_Text.style.display='none'; Codehighlighter1_1681_1976_Open_Image.style.display='inline'; Codehighlighter1_1681_1976_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].D;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;c;&nbsp;i&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].D)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1681_1976_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1681_1976_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">p[i].x&nbsp;作为当前枚举的行，进栈</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;stack[&nbsp;top</SPAN><SPAN 
style="COLOR: #000000">++</SPAN><SPAN 
style="COLOR: #000000">&nbsp;]&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[i].x;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i;<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">对于该枚举的行，删除该行上1的格子所在的列</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG id=Codehighlighter1_1807_1832_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1807_1832_Open_Text.style.display='none'; Codehighlighter1_1807_1832_Closed_Image.style.display='inline'; Codehighlighter1_1807_1832_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1807_1832_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1807_1832_Closed_Text.style.display='none'; Codehighlighter1_1807_1832_Open_Image.style.display='inline'; Codehighlighter1_1807_1832_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(j&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].R;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].R)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1807_1832_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1807_1832_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CoverCol(p[j].y);<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">if</SPAN><SPAN 
style="COLOR: #000000">&nbsp;(&nbsp;dfs(k</SPAN><SPAN 
style="COLOR: #000000">+</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN 
style="COLOR: #000000">)&nbsp;)<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN 
style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" align=top><BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN 
style="COLOR: #008000">对于该枚举的行，恢复该行上1的格子所在的列</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i;<BR><IMG 
id=Codehighlighter1_1939_1963_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_1939_1963_Open_Text.style.display='none'; Codehighlighter1_1939_1963_Closed_Image.style.display='inline'; Codehighlighter1_1939_1963_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_1939_1963_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_1939_1963_Closed_Text.style.display='none'; Codehighlighter1_1939_1963_Open_Image.style.display='inline'; Codehighlighter1_1939_1963_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">for</SPAN><SPAN 
style="COLOR: #000000">(j&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].L;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;i;&nbsp;j&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;p[j].L)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_1939_1963_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_1939_1963_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Release(p[j].y);<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;top&nbsp;</SPAN><SPAN 
style="COLOR: #000000">--</SPAN><SPAN style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">恢复c</SPAN><SPAN 
style="COLOR: #008000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top></SPAN><SPAN 
style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;Release(c);<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">return</SPAN><SPAN 
style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN 
style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/None.gif" align=top><BR><IMG 
id=Codehighlighter1_2023_3200_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_2023_3200_Open_Text.style.display='none'; Codehighlighter1_2023_3200_Closed_Image.style.display='inline'; Codehighlighter1_2023_3200_Closed_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockStart.gif" 
align=top><IMG id=Codehighlighter1_2023_3200_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_2023_3200_Closed_Text.style.display='none'; Codehighlighter1_2023_3200_Open_Image.style.display='inline'; Codehighlighter1_2023_3200_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedBlock.gif" 
align=top></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;main()&nbsp;</SPAN><SPAN 
id=Codehighlighter1_2023_3200_Closed_Text 
style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_2023_3200_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">int</SPAN><SPAN 
style="COLOR: #000000">&nbsp;T&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR><IMG 
id=Codehighlighter1_2076_3198_Open_Image 
onclick="this.style.display='none'; Codehighlighter1_2076_3198_Open_Text.style.display='none'; Codehighlighter1_2076_3198_Closed_Image.style.display='inline'; Codehighlighter1_2076_3198_Closed_Text.style.display='inline';" 
alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockStart.gif" 
align=top><IMG id=Codehighlighter1_2076_3198_Closed_Image style="DISPLAY: none" 
onclick="this.style.display='none'; Codehighlighter1_2076_3198_Closed_Text.style.display='none'; Codehighlighter1_2076_3198_Open_Image.style.display='inline'; Codehighlighter1_2076_3198_Open_Text.style.display='inline';" 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ContractedSubBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
style="COLOR: #0000ff">while</SPAN><SPAN 
style="COLOR: #000000">(scanf(</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN 
style="COLOR: #000000">%d&nbsp;%d</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">,&nbsp;</SPAN><SPAN 
style="COLOR: #000000">&amp;</SPAN><SPAN 
style="COLOR: #000000">n,&nbsp;</SPAN><SPAN 
style="COLOR: #000000">&amp;</SPAN><SPAN 
style="COLOR: #000000">m)&nbsp;</SPAN><SPAN 
style="COLOR: #000000">!=</SPAN><SPAN 
style="COLOR: #000000">&nbsp;EOF)&nbsp;</SPAN><SPAN 
id=Codehighlighter1_2076_3198_Closed_Text 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;No&nbsp;].Sum&nbsp;</SPAN><SPAN 
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alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_2860_2981_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;last&nbsp;].Sum&nbsp;</SPAN><SPAN 
style="COLOR: #000000">++</SPAN><SPAN style="COLOR: #000000">;<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
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alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;No&nbsp;].D&nbsp;</SPAN><SPAN 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p[&nbsp;No&nbsp;].D&nbsp;</SPAN><SPAN 
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align=top><BR><IMG id=Codehighlighter1_3065_3102_Open_Image 
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alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(</SPAN><SPAN 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN 
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alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/dot.gif"></SPAN><SPAN 
id=Codehighlighter1_3126_3195_Open_Text><SPAN style="COLOR: #000000">{<BR><IMG 
alt="" src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/InBlock.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;flag&nbsp;</SPAN><SPAN 
style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN 
style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR><IMG alt="" 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;top&nbsp;</SPAN><SPAN 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dfs(</SPAN><SPAN 
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align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;puts(</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">NO</SPAN><SPAN 
style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedSubBlockEnd.gif" 
align=top>&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN 
style="COLOR: #000000"><BR><IMG alt="" 
src="舞蹈链备忘：解决精确覆盖问题 - yysdsyl的专栏 - CSDN博客.files/ExpandedBlockEnd.gif" 
align=top>}</SPAN></SPAN></P>
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